Trolley for electric railways.



No. 849,666.- PATENTED APR. 9, 1907.

W. EDWARDS.

TROLLEY FOR ELECTRIC RAILWAYS.

APPLIOATION FILED 00T. 17, 1905.

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THlRD TO GEORGE W. KEENEY AND ONE MCQUiLLAN.

-THlRD TO 'VlL'LIAM H.

TROLLEY FOR ELECTRIC RAILWAYS.

Specication of Letters Patent.

J:atented April 9, 1907.

Application filed October 17,1905. Serial No. 283.158.

To 'lull/07M /7/'y '/1'1//1/,1/ (fon/cern:

Be it known that 1, VAL'rEn Enwan'ns, a

citizen of the United States of America, re-

siding at Oedargrove, in the county of Kanawha and State of l/Vest Virginia, have invented new and useful Improvements in Trolleys, of which the following is a specification.

This invention relates to improvements in trolleys for electric-railway cars, &c., and has 'for its object to provide an improved construction and arrangement ot' p arts whereby the trolley-wheel is mounted upon the pole in such manner as to freely 'follow curves or other irregularities in the trolley-wire, thereby preventing displacement of the wheel from the wire 'when the car is rounding a curve or when the wheel encounters delected portions or' the wire.

The invention further has for its object to revolubly support the wheel without the use of the ordinary axle and to thereby reduce the number of parts and decrease the cost ol' construction.

The preferred embodiment of the invention is illustrated in the accompanying drawings, in which- Fi re 1 is a side elevation oit the trolleywhee and-supporting parts. Fig. 2 is a vertical transverse section on the line 2 2 of Eig. 1. Fig. 3 is a side view oi' the trolley-wheel.

Referring now more particularly to the drawings, the numeral 1 designates a socket adapted to be applied to the upper end of a Ytrolley-pole and having an upper rearwardlyextending horizontal ear or lug 2, forming a support for a wheel carrying bracket 3.

The bracket 3 comprises upper and lower sections 4 and 5, which are, respectively, provided in their meeting faces with recesses 6 and 7, cooperating to provide a socket S, the lower portion 7 of said socket being ol' hemispherical and the upper portion 6 thereof of truste-conical form. Mounted to turn within this socket is a correspondingly-shaped head 9, having a threaded stem 10, projecting upwardly and loosely through an opening 11 leading lfrom the apex of the socket portion 6 through the horizontal plane upper 'face of the upper bracket-section L1. The sections 4 and 5 are respectivelyT provided with ears 12 and 13, which are pivotally connected with the ear 2 by a bolt 14, on which the bracket is adapted to swing laterally or sidewise in a horizontal plane.

The trolley-wheel 15 is mounted to revolve between the arms or sections 16 and 17 of a vertically-divided harp or yoke 1S, the member 17 of which is provided with an inwardlyextending lug 19, abutting against the base l of the section 16 and connected therewith by l a bolt 20, which detachably holds the secl tions assembled. The stem 1() oi the head 9 l passes upward through an opening 21 in said l lug 2O and has a transverse aperture 22 lor the passage of the bolt 20, which bolt thus also serves to 'fixedly connect the harp with the head 9 to turn therewith, so that the trolley-wheel may assume any angle laterally to the bracket to more e'l'lectually follow the curves or sinuosities in the line-wire. The head 9 couples the socket-sections il and 5 to prevent independent movement thereof and l adapt them to swing in unison on the bolt 14. A bore 23 is formed in section a ior the introduction of a suitable lubricant in socket S.

The wheel 15 is preferably formed of solid metal and has convex sides 211, which [it within concaved recesses 25 in the harp-sections 16 and 17, said sides and recesses being, respectively, 'formed with annular grooves coacting to provide raceways for the reception of anti'friction bearing-balls 2S. The wheel is thus mounted to revolve freely in and between the arms of' the yoke in such manner as to be securely held in position without the use of an axle or other fastening, thereby enabling the inountings commonly used to be dispensed with and the cost of construction correspondingly reduced. The sections of the harp are provided with ducts or channels 29, through which an oil or other lubricant may be conveniently introduced to the bearing-'faces of the harp and wheel.

1t will be seen that the construction oli the trolley is simple and inexpensive and that it l permits a wheel to readily follow the curves in a line-wire without jumping therefrom.

Having thus described the invention, what t is claimed as new is- A trolley comprising superposed horizoni tal sections having recesses forming a socket, l a head turning in said socket and having an upwardly-projecting shank or stem, a harp IOO composed of tWo sections having bearng- I oonoavltles, one of send seotlons belng .provldecl Wlth an mward eXtenslon through With, and means for pvotally connecting the bracket With a trolley-pole. u

In testimony whereof l ah my signature which said stem extends, an aXleless trolleyin presence of tWo Witnesses.

Wheel having convex sides ournaled in said oonoaved bearing-recesses, a. bolt passing through the sections of the harp and through the stem to rigidly connect the latter therel WALTER EDWARDS. Witnesses D. H. PUTNEY, H. S. MATHEWs. 

